November weather forecast and climate
Cozumel, Mexico

November, the last month of the autumn, in Cozumel, is also a moderately hot month, with temperature in the range of an average low of 21.7°C (71.1°F) and an average high of 29.7°C (85.5°F).

Temperature

In Cozumel, the average high-temperature is relatively the same as in October - a moderately hot 29.7°C (85.5°F). In November, the average low-temperature is 21.7°C (71.1°F).

Heat index

In November, the average heat index is estimated at a very hot 37.6°C (99.7°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, differences in body mass, height, and shape, pregnancy, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in Cozumel is 83%.

Rainfall

In Cozumel, during November, the rain falls for 11.1 days and regularly aggregates up to 122.5mm (4.82") of precipitation. In Cozumel, Mexico, during the entire year, the rain falls for 119.9 days and collects up to 1489.9mm (58.66") of precipitation.

Sea temperature

In Cozumel, the average seawater temperature is 28°C (82.4°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In November, the average length of the day is 11.2h.

Sunshine

September and November, with an average of 6.1h of sunshine, are months with the least sunshine.

UV index

In November, the average daily maximum UV index in Cozumel is 8. A UV Index estimate of 8 to 10 represents a very high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 8 transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.